Mechanical horn.



E. AUFIERO.

MECHANICAL HORN.

APPLICATION FILED OCT. 12. 1915.

1,Q39,&%6Q Patented Sept. 4, 1917.

EMANUEL AUFIERO, or BROOKLYN, NEW YORK.

MECHANICAL HORN".

aaaaee.

Application filed October 12, 1915.

. To all whom it may concern:

illustrated two different modifications of my Be it known thatI, EMANUEL AUrIERo, a citizen of the United States, and a resident of the borough of Brooklyn, Kings county, New York, have invented new and useful Improvements in Mechanical Horns, of which the following is a specification.

This invention relates to mechanical horns of the character used for warning signals for automobiles, motorcycles, .and other vehicles, and has for its object to provide a horn of this character of simple construction, containing a minimum number of working parts, and designed to be of exceedingly cheap manufacture without sacrificing any of the advantages of durability, appearances, and ease of operation.

In the accompanying drawings, I have improved horn and in said drawings Figures 1 and 2 are longitudinal and transverse sections respectively through a mechanical horn embodying one form of my said invention,

Fig. 3 is a section on line 3 3 of Fig.1; and

Fig. 4 is a longitudinal sectional view illustrating the alternate form of my invention.

Similar reference characters indicate similar parts throughout the several views.

My improved horn comprises the usual cylindrical casing 1 having one end closed by the vibratory diaphragm 2 held in place by the clamping ring 3 in the usual manner. The diaphragm 2 is provided at its center with a contact pin 4 which is adapted to be engaged by the serrated disk 5 mounted in the casing on a transverseshaft 6 extending across the casing in a plane parallel to the plane of the diaphragm and revolubly supported on screw 7 set in the sides of the casing. The shaft 6 has formed integrally with it a pinion 8 adjacent one side of the disk 5, while attached to the disk on its opposite face are a plurality of sheet metal disks 9 constituting a fly wheel for increasing the momentum of the disk when actuated in the manner to be hereinafter described. Attached to the shaft 6 adjacent the outer disk 9 is a ratchet wheel 10 adapted to be engaged by a pawl 11 pivoted on the face oflthe adjacent disk 9, whereby the rotation of the shaft in one direction will operate to rotate the serrated disk, while in the other direction it will be free of the disk.

Specification of Letters Patent.

Patented Sept. a, tea 7.

Serial No. 55,385..

For operating the shaft 6 I preferably provide a rack bar 12 mounted for reciprocation in a. direction at right angles to the shaft and as shown in the drawing in a plane parallel to the plane of the diaphragm. The rack bar is preferably supported in the manner shown in Figs. 1 and 2 ma guide sleeve 13 whose ends project through the wall of the casing and are firmly soldered or otherwise attached in place. One end of the sleeve 13 is closed, as shown, to provide a seat for the coil spring 11L working in the longitudinal hole or groove in the end of the rack bar to return the rack bar to its opposite or elevated position when depressed by means ofthe knob 15 on the outer end of the rack bar.

The side of the sleeve 13 adjacent the pinion 8 is cut away as illustrated to permit the teeth of the rack bar to engage the pinion.

The operation of the device is obvious from the above description. By weighting the serrated disk in the manner illustrated it may be given sufiicient momentum upon the downward movement of the rack for it to continue its rotation against the resistance of the contact pin at during the upward movement of the rack under the action of the spring whereby continued vibration of the diaphragm may be produced by the reciprocation of the rack bar. By projecting the rack through the lower side of the casing I am able to give the-shaft a greater number of rotations at each reciprocation, thereby more certainly insuring its continued rotation during the idle movement of the rack bar. The guide sleeve serves to preserve the alinement of the pinion and rack with consequent ease of operation and permits a thinner shell to be employed for the casing without weakening the construc- I tion. The casing. guide sleeve, diaphragm,

and disks are by my improved construction all made of sheet metal whereby the cost of construction is materially reduced.

In the modified construction shown in Fig. 3 all parts are of substantially the same construction as in the preferred type except that the spring for returning the rack bar instead of being arranged in the end of the bar is mounted on a rod 20 set in the casing to the rear of the rack bar and parallel therewith, the spring 21 occupying the full width of the casing and operating the rack bar through means of a lug or bracket 22 attached to the rear of the rack bar and sliding on the rod 20. This construction provides an additional guide for the spring and rack but issomewhat more costly to manufacture than the I preferred construction.

In the foregoing specification and accompanying drawing I have described and shown my improved'hornin all its details of construction. It is to be understood, however, that the invention is not limited to such details, but that they may be variously modified without departing from the spirit ofv the invention or the scope of the appended claims. v I

Having thus described my invention what I claim and desire to secure by Letters Patent is:

1. In a mechanical horn the combination of a vibratory diaphragm, a casing having one end closed by said diaphragm, a heavy serrated disk supported within said casing for rotation about an axis parallel with the plane of said dia hragm, a pinion support-" ed within the casmgadjacent said disk for rotation aboutthe same axis, a guide sleeve extending across the casing and projecting beyond its wall, a toothed rack mounted for reciprocation in said guide sleeve, said guide sleeve having a portion cut away adjacent the said pinion to permit the'engagement of the rack teeth therewith and a one way so A ed within-the casing adjacent said disk for rotation about the same axis, a guide sleeve extending across the casing and projecting beyond its wall, atoothed rack mounted for reciprocation in said guide sleeve, said guide sleeve having a portion cut away adjacent.

the said pinion to permit the engagement of the rac teeth therewith, a one way clutch connection for transmitting motion from said pinion to'said disk, :1. spring having. operative engagement .with said rack for maintaining it projected beyond the ide sleeve a predetermined extent, and aob on saidirack whereby it may be directly operated. e

3. In a mechanical horn'i'the combination of a casing, a vibratory diaplhrfzigm closing one end of the casing, a is extendin across said casing, a disk for vibrating sa1 diaphragm, said disk having radial serra-' 'tions on itsperiphery to operatively en age said diaphragm, a pinion-on said sha a tubular guide extending across said casingatright angles to said shaft, and projecting beyond the wall of said casing, a toothed -.eral serrations adapted to engage sa1 of a sheet metal casing having an outwardly turned flange at oneend, a vibratory diaphragm supported by said flange and of larger-diameter than the casing, said diaphragm having a contact wear-piece, a disk supported in said casing for rotation about an axis substantially parallel with the plane of the diaphragm, said disk having peripheral serrations adapted to engage said wear-piece to vibrate the diaphragm, a tubular guide supported bythe cylindrical wall of said casing and extending across the easing at right angles to the axis of rotation of said disk, a pmion supported in said casing adjacent said disk for rotation about 90 the same axis, said tubularguide having its wall adjacent the teeth of said pinion cut away with the teeth of the pinion projecting into the guide, a toothed rack mounted for reciprocation in the guide with its teeth in engagement with the pinion, a spring for maintaining the rack projecting out of the guide ,with the teeth at its end in engage ment with the pinion, the toothedv portion of said rack being of such length that the '100 teeth project beyond the cylindrical wall of the casing but, not beyond the end of the guide, and a one way clutch for transmitting motion from the pinion to the disk in one direction of its oscillating motion.

5. In a mechanical horn the combination of a sheet metal casing having an outwardly turned flange at one end, a vibratory .diaphragm supported by said flange and of larger diameter than the casing, said diaphragm having a contact wear-piece, a disk supported in said casing for rotation about an axis substantially parallel with the plane of the diaphragm, said disk having eriph wearpiece to vibrate the diaphragm, a tubular guide supported by the cylindrical wall of saldcasing and extending across the casing at r1 ht angles to the axisv of rotation of sald sk, a pinion. supported in'said casing, 126

adjacent said disk for rotation about the same axis, saidfltubular de having its wall ad acentzthe teeth. 0 said pinion cut away w thitheteeth of the pinion-projecting into the guide, a-toothedrack mounted .for

reciprocation in the guide with its teeth in engagement with the pinion, said rack havmg a longitudinal recess back of said teeth, a spring in said recess for maintaining the rack projecting out of the guide with the 130 teeth at its end in engagement with the Signed at New York in the county of pinion, the toothed portion of said rack be- New York and State of New York this 13th. 1w ing of such length that the teeth project day of September, 1915.

beyond the cylindrical wall of the casing but not beyond the end of the guide, and a EMANUEL AUFIERQ' one Way clutch for transmitting motion Witnesses: from the pinion to the disk in one direc- W. B. MORTON,

tion of its oscillating motion. A. I. MILLER. 

